Machine for applying cutter strips to a dispensing carton for rolls of wrapping material such as paper



Dec. 3, 1957 J. E. ANNEN 2,815,061

MACHINE FOR APPLYING CUTTER STRIPS TO A DISPENSING CARTON FORROLLS OF WRAPPING MATERIAL SUCH AS PAPER- Filed Oct. 18, 1954 5 Sheets-Sheet 1 3/ 5 5 gdp g ga Dec 3, 1957 E. ANNEN 2,815,061

MACHINE FOR APPLYING TER STRIPS TO A SPENSING CARTON FOR ROLLS OF WRAPPING MATERIAL SU AS PAPER Filed Oct. 18, 1954 5 Sheets-Sheet 2 INVENTOR. Ma /a; 4. /7m/7e/7 l Um I I Hr Dec. 3, 1957 E ANNEN 2,815,061

J. MACHINE FOR APPLYING CUTTER STRIPS TO A DISPENSING CARTON FOR ROLLS OF WRAPPING MATERIAL SUCH AS PAPER Filed Oct. 18, 1954 5 Sheets-,Sheet 3 2,815,061 we CARTON Dec. 3, 1957 J. E. ANNEN CUTTER STRIPS TO A DISPENS RAPPING MATERIAL SUCH AS P APER 5 Sheets-Sheet 4 MACHINE FOR APPLYING FOR ROLLS OF W Filed Oct. 18, 1954 INVENTOR. MEI/775; f. /7/7/7/7 w \ww WMWHEQWQW m m RR A z/away Dec. 3, 1957 1 5 6 0 e ,N e 50 1m 8A 5 t 2 8 E mm J. E. ANNEN YING CUTTER STRIPS TO A DI MACHINE FOR APPL SPE FOR ROLLS OF WRAPPING MATERIAL SUCH AS Filed Oct. 18, 1954 INVENTOR. Mme; A. /7/7/?e/7 mm {M I ////q//7(i% MACHINE FOR APPLYING CUTTER STRIPS TO A DISPENSING CARTON FOR ROLLS F WRAP- PING MATERHAL SUCH AS PAPER James E. Annen, Kalamazoo, Mich., assignor to Sutherland Paper Company, Kalamazoo, Mich.

Application October 18, 1954, Serial No. 462,681

11 Claims. (Cl. 153-1) This invention relates to machine for applying cutter strips to a dispensing carton for rolls of wrapping material such as paper.

The principal objects of this invention are:

First, to provide a machine for rapidly attaching cutter strips to dispensing carton blanks While the blanks are in flat form and as the blanks are continuously advanced along a conveyor so that the attaching operation is carried out as part of a continuous operation.

Second, to provide a machine which will form a continuous length of flat metal strip stock into lengths of individual cutter strips and form cutter teeth in the strips and attach the lengths to the edges of carton blanks in a continuous automatic operation.

Third, to provide a machine which forms cutter strips and attaches the strips to the edges of the carton blanks in a secure and smooth connection.

Fourth, to provide a machine which attaches cutter strips to the edges of carton blanks in a continuously crimped joint as distinguished from an intermittently stapled joint.

Fifth, to provide a machine which attaches cutter strips to carton blanks in a smooth joint having no rough projections other than the teeth of the cutter strip which are likely to catch or scratch the hands or the web of material dispensed from the carton.

Other objects and advantages of the invention will be apparent from a consideration of the following description and claims.

The drawings, of which there are five sheets, illustrate a highly practical form of machine and the several operations performed in forming or attaching the cutter strips to the carton blanks.

Fig. 1A is a plan view of the leading or starting end of the machine into which the materials are fed.

Fig. 1B is a plan view of the trailing end of the machine from which the finished product is delivered and constitutes a continuation of Fig. 1A.

Fig. 2 is an enlarged fragmentary side elevational view partially in cross section taken along the plane of the line 22 in Fig. 1A and illustrating the stock feeding and perforating portions of the machine.

Fig. 3 is an enlarged fragmentary cross sectional view through the stock perforating rolls taken along the plane of line 3-3 in Fig. 2.

Fig. 4 is an enlarged fragmentary plan view of the cutter strip severing and attaching portion of the machine illustrated in Fig. 1B.

Fig. 5 is an enlarged fragmentary elevational view of the cutter strip severing and feeding portion of the machine shown in Fig. 4.

Fig. 6 is an enlarged fragmentary elevational view of the cutter strip crimping and attaching portion of the machine shown in Fig. 4.

Fig. 7 is a fragmentary perspective view of a portion of the cutter strip stock after the first forming operations have been performed thereon.

Fig. 8 is a fragmentary cross sectional view through the first forming rolls taken along the plane of the line 88 in Fig. 6 and illustrating the first forming and attaching operation of the machine.

Fig. 9 is a fragmentary perspective View through the final forming rolls taken along the plane of line 9-9 in Fig. 6.

Fig. 10 is an enlarged fragmentary cross sectional view through the final pressure and attaching rolls taken along the plane of line 1010 in Figs. 4 and 6.

Fig. 11 is a fragmentary elevational view of the finished cutter strip attached to the carton blank.

This invention deals with the formation and attachment of cutter strips to carton blanks of the type that are used for dispensing webs of material such as wax paper, metal foil, and more particularly the newly developed synthetic films. The material to be dispensed is formed in a roll and let out through the cover of a carton, a cutter strip is attached to the edge of the carton so that sheets of desired length can readily be severed from the web of material as will be readily understood. Generally,

as indicated in Figs. 1A and 1B, the machine comprises driving stock feeding rolls 1 operated from a motor 2 and adapted to draw in a continuous strip of flat metal stock 3 from a supply coil 4. The feed rolls 1 may also partially form the strip of stock. The rolls 1 deliver to perforating toothing rolls 5 and the stock is delivered from the perforating rolls to a flexibly coiled stock takeup member 6. The stock is advanced from the take-up member 6 to a forwarding and cutting head or station 7 where the stock is severed into individual cutter strips of the desired length and advanced to an attaching or crimping head 8 where the individual strips are attached to the edges of the individual carton blanks. Simultaneously with the advance of the strip stock and the individual cutter strips a plurality of carton blanks are advanced individually as at 9 from a blank feeding machine and hopper 10, to a conveyor 11 having blank advancing flights 12. After the blanks 9 pass the cutting head 7 they are shifted transversely of the conveyor by a reciprocating shift member 13 to bring each of the blanks into registering relation with the individual cutter strips in the attaching head 8. The finished blanks with the cutter strips 14 attached thereto are delivered to a stack at the end of the machine as at 15 in Fig. 13.

Considering more particularly the infeeding and toothing of the metal strip stock attention is directed to Figs. 2 and 3.

The flat strip stock 3 is taken in by the infeeding rolls 1 which form the flat strip into a shallow channel with inclined side walls 16. The channeled stock is delivered to perforating rolls 5 also driven from the motor 2. The lower perforating roll 5A is merely a backing roll having a channeled rim shaped to receive the channeled stock. A peripheral groove 17 in the roll 5A leaves the center of the web of stock unsupported. The upper perforating roll 53 has a plurality of radially projected teeth 18 which engage the inside of the strip of stock and press a plurality of similarly shaped teeth 19 downwardly into the groove 17 in the lower perforating roll 5A. The teeth 19 are slightly blunted and are pressed only part way from the plane of the center of the strip of stock so that the tips and side edges of the teeth are completely severed from the strip of stock.

After passing from the perforating rolls 5 the strip of stock is directed through a coiled flexible sheath 20. The sheath 20 has a free end 21 and is limited as to expansion by a retaining frame 22. In passing through the sheath 20 to a receiving conduit 23 the strip of stock is twisted so that the channel section of the stock opens laterally or transversely toward the conveyor 11. Should the strip of stock break between the conduit 23 and the sheath 20, or should the feed rolls 1 deliver more strip stock thanis taken up by the remainder of the machine, the sheath 20 will expand as shown by the dotted lines 24 in Fig. 2 to actuate the lever 25 of an electric switch 26. The switch 26 is connected to control the motor 2 and stop the motor in the event of malfunctioning of the machine.

The guide conduit 23-delivers the twisted and laterally facing strip of channel stock to :feed rolls shown more particularly in Figs. 4 and 5. The first feed roll 27 operates against the back of the channel and cooperates with the-pressure roll 23 to advance the stockto a cutter block 29. The .feed roll 27 is driven from the .mitre gears 30 by a shaft 31 and the pressure roll 28 isswingably mounted on an arm 32pivotably supported at 33. The pressure roll 28 and the arm 32 are arranged to be swung out of coa'cting feeding relation with the roll 27 by operation of a-pushrod 34 from a cam shaft 35 (see Fig. 4).. The push 'rod 34- carries a follower '36 actuated byacam 37 on the-cam shaft.

A reciprocal cutter part or knife 38 =coacts with the cutter block 29 tosever the continuous stripstock into individual cutter strips. The knife 38 has -a cam follower 39 actuated by a cam 40 on the camshaft 35. The cams 37 and 40 aretshaped and positioned on the shaft 35 .so that the pressure roll '28 first functions to deliver :the desired length of strip stock past the cutter block 29 after which the pressure roll "28 is desirably backed off by the cam 37 to interrupt the feed of the strip stock while the knife 38 is actuated.

lnpassing from the feed rolls 27 and 28 the strip stock is advanced to a second driven feed roll 41'having a coacting=pressureroll 42 mounted on a swingable arm 43. The second -fee'd roll 41 is driven from a shaft 44 by-the mitre gears 45 (see Fig. and the shaft 44 in turn drives the previously mentioned shaft 31 through mitre gears .46. Drive from gears 45 comes through a shaft 47, as will be described.

The feed rolls 41 and 42act to advance the severed cutter strip after it has been disconnected from the strip stock andis no longerunder direct control of the feed rolls '27 and 28. For-this purpose the pressure roll 42 and'the arm 43 are arranged to-be swung between operative and inoperative positions by a push rod '48 having a cam follower 49 operatedby the cam 5f on the shaft 35. Normally the-cam 50 holds the pressure roll '42 .in inoperative relation untilthe cutter strip has been severed and .is ready to advance in timed relation with blank 9 on the conveyor.

"The'length of the individual cutter strips to be formed is matched -withthe length of the blank 'to which the strip is to be attached. This is controlled by a plurality of stop pins 51 slidably mounted'in a block 52 andibiased upwardly by springs 53 (see Fig. 6). The stop pins 51 are selectively pressed downwardly into the path'of the end of the strip stock to prevent advancing of the stock by meansof a stop actuating plate '54 pivotably supported at 5'5 and having selectively adjustable screws 56adjusted to actuate any one of the stop pins 51. The stop actuating plate 54-is rocked on its pivot by a push rod 57 having a cam follower 58 driven by the cam 59 on the shaft 35. The cam 59 depresses the plate and the selected stop 51 to determine the length of the cutter strip and after the knife 38 has operated the cam '59 retracts the stops and the cam 59 places the feed rolls and 42 in operation.

The severed and partially formed cutter strips are advanced by the rolls 40 and 42 to under a series of forming rolls 60A-D. The forming rolls have coacting driven rolls .61A to D driven by ;beveled gears '62 from the previously mentioned shaft 47. The shaft 47 is driven from .a gear boxorjtransmission 63 connected by'belts 64 to the-motor 65. The transmission 63 also drives'the previously mentioned shaft 35 so that the several cams i and feed rolls are actuated in timed relationship with the forming rolls.

A parallel shaft 66 driven by the chain 67 from the shaft 35 is provided with a mitre gear connection 68 to a cross shaft 69 and the shaft 69 is coupled by the chain 70 (see Fig. 6) to the conveyor for advancing the carton blanks. A chain 71 connects the drive and carton conveyor to the previously described carton blank feeding mechanism 10 so that all elements of the carton blank feeding mechanism are operated in timed relationship.

The conveyor 11 which advances the carton blanks is provided with a side rail 72 which is radially adjustable to accommodate carton blanks of different sizes. A transversely shiftable shift member 73 is pivoted on the end of the side rail as at 74 and actuated by a push rod 75 from a cam 76 on the parallel shaft 66. The shift member 73 is thus operated in timed relationship with the other elements of the machine to shift the individual carton blanks transversely into nesting relation'with the individual cutter strips 'asthe blank and cutter strips are advanced through the forming rolls 6tlA to D.

The character and function of the forming rolls 60A to D is moreparticularly shown in Figs. 8 and 9. The forming or shaping of the cutter strips may be accomplished progressively by several sets of forming rolls, as illustrated, with each successive set of rolls forming the strip slightly more than the previous set. The first set of rolls 60A and 61A form the cutter strip from its partially formed shape as shown in Fig. 7 into a sharper bent section to bring the side flanges 16 into parallel spaced relationship with the edge of the carton blank, folding the section in the center of the cutter strip, as at 77, without contact with the center of the strip so that the teeth 19 are not bent but are inclined sharply away from the body of the cutter strip. Succeeding forming rolls fold the sides of the cutter strip into close lapping contact with the edge of the carton blanks, as is shown in Fig. 9. Final crimping and pressing rolls 73 and 79 have peripheral grooves spaced and positionedto crimp the edges of the cutter strip into the carton blank as in Fig. 10, and alsoto smoothly round the sides of the cutter strip and curve the teeth 19 slightly around the edge of the cutter strips.

The end product is a cutter strip firmly attached to the carton blank and having-no sharp projecting edges other than the teeth and even the teeth are smoothly curved away from one surface of the cutter strip and blankso asnot topresent objectionable rough edges. At the same time the downwardly curved sides of the teeth are highly effective in cutting a web of material passed over the cutter strip from a roll contained in the carton after the carton is erected.

No attempt has been made to describe possible modifications of the several elements-and characters of the machineswhich may show the scope of the invention, as defined in the claims.

Having thus described the invention, what is claimed as new and is desired to be secured by Letters Patent'is:

1. Cutter strip applying mechanism for carton blanks comprising, a driven roll arranged to feed a continuous length of metal strip stock and form the same-into a shallow channel with inclined sides and-a flat bottom a perforating roll positioned to operate on said strip after said first roll and having closely spaced teeth adaptedto press blunted teeth from the bottom of thechannel in the middle of the strip, a coiled flexible guide member positioned to guide said strip as it leaves said perforating roll and twist saidstrip to face the channelthereof laterally of the strip, a switch positioned to be actuated by said. guide member as said member uncoilsbeyond a predetermined point, said switch being connectedto shut off thedriveto said driven roll, a pair of driven feed rolls; and. shiftable coacting pressure rolls positioned in-longitudinally spaced relation to advance said strip from said guide member, a cutter positioned to out said strip .between saidfeedrolls,

a stop shiftable into the path of said strip after passing the second of said feed rolls, a plurality of forming rolls positioned to receive the severed lengths of said strip and act successively thereon, a conveyor having flights arranged to advance carton blanks in timed relation to said strips, a shift member movable transversely of the line of said forming rolls to move the edge of a carton blank on said conveyor transversely into the channel of the severed lengths of said strip, and drive means connected to continuously drive said forming rolls and conveyor and to intermittently actuate the pressure rolls of said feed rolls and said cutter and said stop and said shift member in timed relation, said forming rolls being shaped to first bend the center of the web of the channel section of said length of strip to bring sides thereof into spaced parallel relation to the edge of the blank and to extend the tips of the teeth on the strip in inclined relation from the folded edge of the strip and to thereafter fold the sides of the strip into contacting lapped relation to the edge of the blank and to thereafter crimp the free edges of the strip into the edge of the blank and curve the teeth on the strip slightly from their bases around the edge of the blank.

2. Cutter strip applying mechanism for carton blanks comprising, a driven roll arranged to feed a continuous length of metal strip stock and form the same into a shallow channel with inclined sides and a flat bottom, a perforating roll positioned to operate on said strip and having closely spaced teeth adapted to press teeth from the bottom of the channel in the middle of the strip, a coiled flexible guide member positioned to guide said strip and twist said strip to face the channel thereof laterally of the strip, a switch positioned to be actuated by said guide member as said member uncoils beyond a predetermined point, said switch being connected to shut off the drive to said driven roll, a pair of driven feed rolls and shiftable coacting pressure rolls positioned in longitudinally spaced relation to advance said strip from said guide member, a cutter positioned to out said strip between said feed rolls, a stop shiftable into the path of said strip after passing the second of said feed rolls, a plurality of forming rolls positioned to receive the severed lengths of said strip and act successively thereon, a conveyor having flights arranged to advance carton blanks in timed relation to said strip, a shift member movable transversely of the line of said forming rolls to move the edge of a carton blank on said conveyor transversely into the channel of the severed lengths of said strip, and drive means connected to continuously drive said forming rolls and conveyor and to intermittently actuate the pressure rolls of said feed rolls and said cutter and said stop and said shift member in timed relation, said forming rolls being shaped to first bend the center of the web of the channel section of said length of strip to bring sides thereof into spaced parallel relation to the edge of the blank and to extend the tips of the teeth on the strip in incline-d relation from the folded edge of the strip and to thereafter fold the sides of the strip into contacting lapped relation to the edge of the blank and to thereafter crimp the free edges of the strip into the edge of the blank.

3. Cutter strip applying mechanism for carton blanks comprising, a driven roll arranged to feed a continuous length of metal strip stock and form the same into a shallow channel, a perforating roll positioned to operate on said strip and having closely spaced teeth adapted to press blunted teeth from the bottom of the channel, a coiled flexible guide member positioned to guide said strip as it leaves said perforating rolls, a pair of driven feed rolls and shiftable coacting pressure rolls positioned in longitudinally spaced relation to advance said strip from said guide member, a cutter positioned to cut said strip between said feed rolls, a stop shiftable into the path of said strip after passing the second of said feed rolls, a plurality of forming rolls positioned to receive the severed lengths of said strip and act successively thereon, means for delivering carton blanks in timed relation to the sides of said strips, a shift member movable transversely of the line of said strips to move the edge of a carton blank from said delivery means transversely into the channel of the severed lengths of said strip, and drive means connected to continuously drive said forming rolls and intermittently actuate the pressure rolls of said feed rolls and said cutter and said stop and said shift member in timed relation, said forming rolls being shaped to fold the sides of the strip into contacting lapped relation to the edge of the blank and to thereafter crimp the free edges of the strip into the edge of the blank and curve the teeth on the strip slightly from their bases around the edge of the blank.

4. Cutter strip applying mechanism for carton blanks comprising, a driven roll arranged to feed a continuous length of metal strip stock formed into a shallow channel with inclined sides and a flat bottom, a perforating roll positioned to operate on said strip and having closely spaced teeth adapted to press teeth from the bottom of the channel in the middle of the strip, a pair of driven feed rolls and shiftable coacting pressure rolls positioned in longitudinally spaced relation to advance said strip from said perforating roll, a cutter positioned to cut said strip between said feed rolls, a stop shiftable into the path of said strip after passing the second of said feed rolls, a plurality of forming rolls positioned to receive the severed lengths of said strip and act successively thereon, means to advance carton blanks in timed relation to said strip, a shift member movable transversely of the line of said forming rolls to move the edge of a carton blank from said blank advancing means transversely into the channel of the severed lengths of said strip, and drive means connected to continuously drive said forming rolls and to intermittently actuate said feed rolls and said cutter and said stop and said shift member in timed relation, said forming rolls being shaped to first bend the center of the web of the channel section of said length of strip to bring sides thereof into spaced parallel relation to the edge of the blank and to extend the tips of the teeth on the strip in inclined relation from the folded edge of the strip and to thereafter fold the sides of the strip into contacting lapped relation to the edge of the blank and to thereafter crimp the free edges of the strip into the edge of the blank.

5. In a cutter strip applying machine, means for delivering cutter strips of channel shaped cross section having inclined sides walls and a flat bottom with teeth bent slightly from the plane of the bottom, means for delivering the edge of a carton blank into the channel of each strip, means for simultaneously advancing each strip and blank longitudinally of the strip, a first pair of forming rolls positioned to act on the strip and bend the side walls thereof into parallel spaced relation to the edge of said blank and bend the bottom of the strip to incline said teeth further away from said bottom, a second pair of forming rolls positioned to act on said strip and bend the same into contacting relation to the edge of said blank, and a third pair of rolls positioned to crimp the free edges of said strip into the side surfaces of said blank and curve said teeth slightly around the edge of said blank.

6. In a cutter strip applying machine, means for delivering cutter strips of channel shaped cross section having inclined side walls and a fiat bottom with teeth bent slightly from the plane of the bottom, means for delivering the edge of a carton blank into the channel of each strip, means for simultaneously advancing each strip and blank longitudinally of the strip, a first pair of forming rolls positioned to act on the strip and bend the side walls thereof into parallel spaced relation to the edge of said blank and bend the bottom of the strip to incline said teeth further away from said bottom, a second pair of forming rolls positioned to act on said strip and bend the same into contacting relation to the edge of said blank, and a third pair of rolls positioned to crimp the tre edge 9 sai st ip in o e s desurfiaees o s i blank it iarQ -lttfi' s ripapp yi mae i e means-fendel ve ineeut-te st S ha ne shap d ss sect o hav n s de wellhea a bott m w t t th ben slig ly om the bott m, m a f d l v ri t edge fe cart hlan a hte th t hann of a s ip, ;,me.an r-fe s mu ta-heehs y a v.an.e 1 eac strip nd 1 bl nk en i udin y e lthe shinena of en na el s pos t oned t a tio ai strip a and n t s m int eent etihg zrelatien :t h s;edg t;.o @eei b ank, a d ben h hptte of th Strip to incline said teeth -f urther away from said bottom, a1 1d;a second pair of-rolls positioned '10 crimp ;the free edsese s d st ip int the d s aee e Sa d-blan In a .ehtt t ip app y ng (m h mean fo deli erin eh e c ri e ehe -sheped cross e n having inclined side Walls and ;a:fl at;-bottor n with teeth be asl sht .f r t elp ah e th hqt om, me for d liver n h d ra .1 a tentblan .v htethe ha el o eeehsstr p ZfiI P i Q ih e l lpe itiened act on, said strips and spaced apart; furtherthan the thickness q ts i hlehk n h in Pe h .s e ve .wi fl parallel bottoms to acton the side walls of thestrips and inelinedledges to act on the bottom of said stripsat each sideeof said teeth, and a second pair of forming rolls spaced apart a distance eqnal to the thickness of sa id blanks and having opposed shallow peripheral grooves with curved edges, the groove engaged withlhe side of the strips to whichsaid'teeth are-attachedbeing wider than the groove in the other-roll of the second pair to incline the teeth at a lesser anglethan the -folded edge of the strip.

9. In a cutter strip applying machine, means fQI delivering cutter strips of channel shaped crosssection havinginclined side Walls and a flat bottom with teeth bent slightly from the plane. ofthe bottorn, means for delivering the edge of a carton blank into the channel of each strip, a first, pair of -forrning ro1ls positioned to act o n said strips and spaced apart further than the thickness of said blanks and having peripheral grooves with fiat parallel bottoms to .act on the side Wallsof the strips and-inclined edges to act onthe b ottorn of said strips at each side of said teeth, and a second pair-of forming rolls spaced apart agdistance equal to thethickness of said blanks and having opposed shallow peripheral grooves-with curved edges, the groove engaged with the sideofthe strip to Which said teeth are attached being wider=than the groove in the other roll of the second pajnthe edges of said grooves engaged vviththe free act 11 edge of said strip being laterally .vofirse .'.to,criInP vone edge of the ,strip into the lblank closer ;.to ,the ,edge not the blank than the ,.other edge ,of the strip.

;10. Ap aratus for making .entter strips ,for dispensing e tm item fla str plstoekncomprising, feed 10115 19 t e t advan sai .stoek and shaped to ;-,form .the tee i to a hallew 'eha -neha flutter wheel posi n d ohperate pm s i stac an having peripherally spaced jaw d pted-ton e suc ess e tee hzfr ml he tr nsverse m dtrpe ien o s d .s oek, whacking member oacting with said cutter wheel ontthe opposite side ofthestock refrom. and: ha in i reev t e t hg w vth c t 0 t s rip wh reby h area fr m which 1 th t eth Pres e l PP9 I d, an veppos d ormihgl p i- .2 rnl't .stee latter he teeth h v -been pressed therefrorn said forming rolls being spaced ,apart further th n; w ce th thi khess ,of ,the s o k and v havn Opposed per het tgnoove wi hiin lined e g enr h t w rd h we se t steekt hend the w b While l vi i th teeth -;-p i t n tangenti lly from he bent vyeb.

=APP'r1F Ql a Q ma in eu st p 1, fo di-spen i e rteh JfFQmJ iP steeheomhris te d-trolls for said .299 5 :i QQk WHWhWLPQQi QMd t pe ate Qnsaid .sto eh h inan iph hal1y iiae Jaw adapte he Pre s ees i-v teet st e h :plan e th s e s K T-P mie e sei e s, :seidiiew prejeetin y nem he cutt r Whee ;Q t1 ;h 1 i 1Q e h st e wh yth teeth ar ,Pw eete 0 1 3 ?et h th ckne o t e st a hae h qwhee w qe tih wit z sa de wh eluon t P- d'e;-:e li h eth tefrpm ah ha i e p ri h rt gteev :IQ i J I g ,wit th vmt l-port nv of t e r; shthereh tth t ree-he vwhie h I W iQ-M ziJ E- JRPQQQQ .ahdhrpese a min r lls-pesitiened to a, A e stoek after the t'eeth have been pressedltherelh see ha med-e1 be n epaee apa turtherl than ic ih ;il1i h -t :th s tse lah havi pphse tp h h r l. ee e te hehd t We W eevtn h ttelem p ie t netehge ia he e be t weh References Cited in the file of this patent UNITED STATES .PATENTS 1,218,249 Englert Mar. 6, 1917 1,313,809 Gare Aug. 19,1919 1,490,772 Gunn Apr. 15, 1924 2,200,605 Pierce May 14, 1940 2,504,698 Kievet Apr. 18, 1950 

